-[X] Jaime will be exchanged for Ned, Sansa and any of his men still imprisoned by Lannisters. Robert's bastards and any family will have safe passage out of the city along with Ned's party. The other noble hostages stay with the army as 'insurance'. Tyrion and Kevan's sons' release can be negotiated if Cersei makes a counter-offer.
-[X] As long as Cersei's line are on the throne, the North and all territories under its rule don't acknowledge the King of the Iron Throne as their sovereign.
--[X] If they won't surrender the city. Ned, his family, his retinue (Rob's bastards we know about included) and their possessions (Ice, ect.) will be granted safe passage to Northern lines.
[x] Tell Robb to keep all prisioners alive and treat them honourably. Demand to have Arya and Sansa return to Robb in exchange for Jaime and Tyrion (daughters for sons), Ned can go home in exchange for Tywin (Lords for Lords). Now, I think the Lannisters won't accept this if Ned/Robb just immediately declares for Stannis, so assure them of the North's neutrality and have them publicly forgive any and all perceived ills and treasons against the crown for now. This is a sucession crisis, the North has nothing to do with it.
-[X] Jaime will be exchanged for Ned, Sansa, Arya (once found) and any of his men still imprisoned by Lannisters. Robert's bastards and any family will have safe passage along with Ned's party. The other noble hostages stay with the army as 'insurance'. Tyrion and Kevan's sons' release can be negotiated if Cersei makes a counter-offer.
-[X] "Tywin and Gregor are to be sent to Dorne. You will flee to Essos with your children and a thousand gold dragons, to be taken back from Lannister vaults later. I mean, even if we leave you here in King's Landing, the Stormlander, Reach, and possibly the Dornish army - now that the defeat of the Lannisters is certain - will come to crush you. Tyrion will be released and made Lord of the Westerlands and rest of the PoW will also be released. Jaime can go to the Night's Watch if he confesses to fathering your kids, which will automatically remove them from any line of succession."
-[X]Add whatever monetary/land/mining deals are appropriate for repaying the damage their pillaging cost, and then a fuckton more, to be paid to the Riverlanders and the Starks
[X] An escort for Ned, Sansa, any of our surviving household (if still alive), and Barristan, along with whatever personal items of ours we want (from Ice to Sansa's dresses, for all I care). We also want Baelish and Varys in chains with us.
-[X] We won't execute any of the hostages who haven't committed obvious crimes until further negotiation (so we can't execute Tyrion, for example, but we can execute Gregor).
-[X] If, after a year, no Lannister attacks happen upon our territories, then Tywin and Tyrion can be ransomed back. The various other nobility can be ransomed back immediately. -[X] High reparations from the Westerlands and the Iron Throne.